ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

ul,
li,
div {
    box-sizing: border-box;
}

h4 {
    margin: 0;
    font-weight: normal;
}

i {
    font-style: normal;
}

.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

.courses-container {
    width: 1200px;
    margin: 100px auto;
}

.courses-container .courses-list {
    width: 1230px;
    margin-left: -18px;
}

.courses-container .courses-list .courses-item {
    float: left;
    width: 236px;
    height: 221px;
    margin-left: 9px;
    padding: 7px 7px 10px;

}

.courses-container .courses-list .courses-item:hover {

    border: 1px solid #ddd;
}

.courses-container .courses-list .courses-item .courses-link {
    display: block;
    width: 220px;
    height: 124px;
    margin-bottom: 6px;
}

.courses-container .courses-list .courses-item .courses-link img {
    width: 100%;
}

.courses-container .courses-list .courses-item .courses-title {
    color: #333;
}

.courses-container .courses-list .courses-item .courses-title:hover {
    cursor: pointer;
    color: #23b8ff;
}

.courses-container .courses-list .courses-item .courses-info {
    height: 75px;
    line-height: 75px;

}

.courses-container .courses-list .courses-item .courses-info .info-free {
    font-weight: 700;
    color: #5fb41b;
    font-size: 14px;
}

.courses-container .courses-list .courses-item .courses-info .info-price {
    color: #e85308;
}

.courses-container .courses-list .courses-item .courses-info .info-uses {
    float: right;
    color: #999;
    font-size: 12px;
}

.courses-container .courses-list .courses-item .courses-info .tip-badge {
    display: inline-block;
    height: 16px;
    Line-height: 16px;
    padding: 0 2px;
    border: 1px solid #e85308;
    font-size: 12px;
    color: #e85308;
    vertical-align: 2px;
}